专业: specialty, specialized field, main field of study (at university), major, professional...
或: maybe, perhaps, might, possibly, or...
挂失: to report the loss of something...
花园: garden...
美女: beautiful woman...
大姐: big sister, elder sister, older sister (also polite term of address for a girl or woman slightly older than the speaker)...
辆: classifier for vehicles...
爬山: to climb a mountain, to mountaineer, hiking, mountaineering...
还款: repayment, to pay back money...
副作用: side effect...
